The baby came so fast, her father was forced to pull over on Interstate 25.

Brinna Lee Milligan had a grand entrance into the world.

"We're on the side of I-25; we are on the side of the freeway. It's freezing outside, and I'm delivering this baby," said father Andrew Milligan.

"We were half way through Bernalillo when I felt the first urge to just push," said mother Deanne Milligan.

Within minutes, Andrew Milligan became the delivery doctor.

"I'm not ready for delivering a baby, but ... I might as well. I got to do it," Andrew Milligan said.

"Just one or two pushes and she was here, and I was like, 'OK, call 911," said Deanne Milligan.

Dispatchers told the couple the umbilical cord needed to be tied off.

"So I find an MP3 cable from my stereo, and I'm like, 'This has got to work,'" said Andrew Milligan.

It worked, and an ambulance soon took them to Lovelace Women's Hospital.

"With all the crazy stuff going on, it's good to have a glimmer of hope -- something that's a sparkle of light," said Andrew Milligan.

Brinna was described as a determined baby.

"(She's a) very determined little girl already. She's going to know what she wants. She's going to know how to get things done. She is such a blessing, and she's going to go so far," said Deanne Milligan.